This Reddit post explains the American presidential election SO well!
And in doing so, it demolishes all of the “both sides!” arguments that are repeated online over and over and over.

To summarize the post, American presidential elections are:
Locked-in
Zero-sum
Winner-take-all
First-past-the-post

More details:
reddit.com

A comment of my own: NONE of these attributes are easily changed by the voter. Changing these attributes to eliminate the problems cited, can only be done with great care. And they require good faith amongst ALL participants in the American polity.

We don’t have those conditions.